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Firewall

A Firewall is a network security device or software application that monitors and controls incoming and outgoing network traffic based on predetermined security rules. Firewalls establish a barrier between trusted internal networks and untrusted external networks, such as the internet, to protect against cyber threats. They can be hardware-based, software-based, or a combination of both, and are essential for enforcing security policies, preventing unauthorized access, and protecting sensitive data from malicious attacks.
Related Terms
Cross-Cutting ConceptCyclomatic ComplexityData ArchitectureEvent-Driven Architecture
What are the different types of firewalls?
Different types of firewalls include hardware-based, software-based, and hybrid firewalls, each serving to monitor and control network traffic based on security rules.
How do firewalls enhance network security?
Firewalls enhance network security by establishing a barrier between trusted internal networks and untrusted external networks, preventing unauthorized access and protecting sensitive data.
What is the role of firewall rules?
Firewall rules are predefined security policies that determine which network traffic is allowed or blocked, helping to enforce security measures and prevent cyber threats.